API Oil Pipes

The American Petroleum Institute, commonly referred to as API, is the largest U.S trade association for the oil and natural gas industry. It claims to represent about 400 corporations involved in production, refinement, distribution, and many other aspects of the petroleum industry.

Standard API Spec 5L, B, X42, X52, X60, X65, X70, API Spec 5CT (Oil Pipes), API 5D
Drill pipes Grade: E75, X95, G105, S135
Connection:NC26, NC31, NC38, NC40, NC46, NC50, 51/2FH, 6 5/8FH
Heavy Weight Drill pipes Size: 3 1/2″, 4 1/2″, 5″, 5 1/2″
Drill Collar Size: 4 3/4″, 6 1/4″, 6 1/2″, 7″, 8″, 9″, 9 1/2″

Slotted liner and composite screen liner
Grades: pipes is manufactured under PSL 1 and PSL2 requirements.
pipes end: Plain,Threaded, Bevelled

Standard                       OD tolerance                                                   WT tolerance
API Spec 5L                   OD<60.3mm        +0.41mm,-0.8mm         +15%, -12.5%
OD≥60.3mm         ±0.75%

Special couplings as specified on purchase order.
API 5L tubes (pipes) coatings: sepcificatioin GB and DIN standard

J55, K55,N80, L80 and P110, PSL 1, PSL 2, API 5L, Grade B, API 5L X42, API 5L X46, API 5L X52, API 5L X56, API 5L X60, API 5L X65, API 5L X70, API 5L X80

There are four steel grades (J55, K55,N80, L80 and P110), two categories (nonupset and external upset) and six sizes (1.9″, 2-3/8″, 2-7/8 “, 3-1/2″, 4″, and 4-1/2″) of tubing.

We are manufacturer of Carbon Steel Pipes and supply high quality Carbon Steel Pipes in both large and small quantities worldwide & offer you the best prices in the market.
We have a team of experienced professionals with years of experience in manufacturing.


About Hunan Prime Steel Pipe Co., Ltd

HUNAN PRIME STEEL PIPE is the export gateway of SHINESTAR HOLDINGS GROUP. We are dedicated in providing and exporting high performance-price ratio welded & seamless steel pipes and fittings covering various steel grades. At Prime Steel Pipe, we believe that honest communication, expertise in our industry, and prompt execution lead to strong long-term relationships. Our professioanl team provides " one-stop procurement" servics to coordinate with your project regulation, site and terrain, and ensure the best quality of products by assigning skillful experts at every stage of production. Our principles is to keep the honesty in mind, to win reputation by trust. We strives to providing quality products, competitive price and value-added services to our clients throughout the world.

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